This is a rare US 1933 50c Century of Progress Baby Zeppelin stamp, featuring a colorful green design. This mint never hinged stamp is graded as 'Extremely Fine' and is uncertified. The stamp commemorates the Century of Progress Exposition in 1933, with a Zeppelin theme, making it a valuable addition to any stamp collection focused on United States back of book issues.

Note: there is a very minor thin back middle section see photo